Means for combining the barrel with the receiver in connection with firearms.



Patented July 31, 1917.

P. MAUSER, DECD.

F. EICHHORN, ADMINISIRATOR.

APPLICATION FILED DEC. 1| I914.

IINQMN H Ii 1 1: i? 52 EE EE I n IIII II I I, I I, I III I I III I l III|II I E I .N

MEANS FOR COMBINING THE BARRELWITH THE RECEIVER IN CONNECTION WITH FIREARMS- 1,234,783.

4 Ingnfor Z a .ldmm'fw I n C 6 6 QM/I M ffdd UNITED STATES PATENT OFFICE.

PAUL MAUSER, DECEASED, LATE OF OBERNDORE-ON-TI-IE-NECKAR, GERMANY, BY FRIEDRICH EICHI-IORN, ADMINISTRATOR, OF OBERNDORF-ON-THE-NECKAR, GERMANY, ASSIGNOR TO WAFFENFABRIK MAUSER AKTIENGESELLSCHAFT, OF OBERNDORF-ON-THE-NECKAR, GERMANY, A CORPORATION OF GERMANY.

MEANS FOR COMBINING THE BARREL WITH THE RECEIVER IN CONNECTION WITH FIREARMS.

Specification of Letters Patent.

Patented July 31, 191 '7.

Application filed. December 1, 1914. Serial No. 875,050.

To all whom it may concern:

Be it known that PAUL MAUsER, deceased, late a subject of the King of Wurttemberg, and residing at Oberndorf-on-the-Neckar, in the Kingdom of Wurttemberg, Germany, invented certain new and useful Improvements in Means for Combining the Barrels with the Receivers in Connection with Firearms, of which the following is a specification.

This invention relates especially to automatic loading fire arms and has for its object to render the barrel readily interchangeable, to simplify and cheapen the manufacture of the barrel and the cartridge chamber, which is of great advantage especially for automatic loading fire arms inasmuch as it is thus possible to more easily extract the discharged cartridge shells without the aid of a lubricant. As compared with the arrangements hitherto in use, wherein the barrel is integral with its end portion carrying the cartridge chamber and the locking abutments and is screwed with the said end portion into the socalled sleeve head of the receiver, the aforesaid advantages are attained by inserting an intermediate piece between the barrel proper z. e., the projectile guiding part possessing the grooves, and the sleeve head of the receiver, which intermediate piece contains the cartridge chamber as well as the locking abutments separately, and extends into the sleeve head on the one hand and receives the rear end of the barrel on the other hand.

A constructional form of the invention is shown by way of example in the accompanying drawings.

Figure 1 shows the respective parts of the fire arm in longitudinal elevation and partly in section.

Fig. 2 is a longitudinal section of the intermediate piece and Fig. 3 is an end elevation thereof.

The constructional form as shown is adapted for an automatic fire arm with rotatable breech bolt, wherein the locking takes place by the cooperation of spiral nipples with correspondingly shaped grooves and shoulders directly in rear of the cartridge chamber. According to the invention, the cartridge chamber is arranged, like the said looking or gripping shoulders, in the special dividing piece m, which is screwed with its rearward end in the sleeve head i of the receiver h and is provided at its front end with an internal thread, in which the rear end of the barrel Z is screwed. The separation is effected in the construction shown in such a manner that the piece m receives the cartridge shell with a part of its collar, while the front part of the cartridge collar extends with the projectile into the barrel proper. The connecting surfaces are beveled at both ends of the dividing piece as well as at the rear end of the barrel in order to insure a very wide, secure and tight joint.

It is obvious that the invention is also adapted for hand loading fire arms as well as for automatic loading fire arms. The advantages attained by the invention are readily obvious, so that no further explanation in that respect is necessary. It may however be stated that on the one hand the interchanging of barrels worn out by shooting or barrels damaged otherwise, is considerably facilitated and cheapened, because it is only necessary to replace the projectile guiding part, while, on the other hand, if the cartridge chamber or the locking abutments are damaged, the projectile guiding part can be retained and only the dividing piece need be replaced.

What is claimed is:-

1. A fire arm comprising a receiver, a barrel proper, and an intermediate part having a cartridge chamber therein and looking lugs for a breech bolt, and interengaging means between said intermediate part and said barrel proper and said receiver.

2. A fire arm comprising a receiver, a barrel proper and an intermediate part, said signed my name in the presence of two sub- 10 recelver having a sleeve adapted to receive scribing wltnesses.

one end of said intermediate part said intermediate part having at its other end a FRIEDRICH EIGHHORN sleeve adapted to receive the rear end of the Administrator of the estate ofPauZ Mauser,

barrel proper, said intermediate part also deceased.

having therein a cartridge chamber and Witnesses:

locking lugs for a breech bolt. ERNEST ENTEN'MANN, In Witness whereof, I have hereunto FRIEDEs K. OAIBES.

Copies of this patent n'ia'y be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

